<template>
  <div>
    <!-- 商品列表区 -->
    <div class="goods-list">
      <router-link tag="div" :to='"/home/goodsinfo/" + item.id' class="goods-item" v-for='item in goodslist' :key="item.id">
        <img :src="item.img_url" alt="">
        <h1 class="title">{{ item.title }}</h1>
        <div class="info">
          <p class="price">
            <span class="new">￥{{ item.sell_price}}</span>
            <span class="old">￥{{ item.market_price}}</span>
          </p>
          <p class="seil">
            <span>热卖中</span>
            <span>剩{{ item.stock_quantity }}件</span>
          </p>
        </div>
      </router-link>
    </div>

    <!-- 加载更多按钮 -->
    <mt-button type='danger' size='large' style='margin-top: 5px' @click='getMore'>加载更多</mt-button>
    <br>
    <br>
    <br>
  </div>
</template>

<script>
export default {
  data(){
    return {
      page: 1, //默认展示第一页
      goodslist:[], // 商品列表
      isloaded: false //节流阀，默认为false，表示没有加载完毕
    }
  },
  created(){
    this.getGoodsListByPag()
  },
  methods:{
    async getGoodsListByPag(){
      // 根据页码获取 商品列表
      const { data } = await this.$http.get('/api/getgoods?pageindex=' + this.page)
      if(data.status === 0) {
        // 当前获取到的数组长度为 0，表示数据已经加载完毕了
        if(data.message.length <= 0){
          // 设置isloaded:true，表示没有新数据
          this.isloaded = true
        }
        this.goodslist = this.goodslist.concat(data.message)
      }
    },
    getMore(){
      // 如果true，表示数据已经加载完毕了，此时直接return
      if(this.isloaded) return
      // 点击加载更多
      this.page++
      this.getGoodsListByPag()
    }
  }
}
</script>

<style lang="scss" scoped>
  .goods-list {
    // 设置父盒子为弹性盒模型
    display: flex;
    // 默认flex 布局的盒子，内部的子元素不会换行，可以使用下面的属性使其换行
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 7px;
    padding-top: 0;

    .goods-item {
      width: 49%;
      border: 1px solid #ccc;
      margin-top: 7px;
      box-shadow: 0 0 7px #ccc;
      padding: 2px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;

      img {
        width: 100%;
        min-height: 170px;
      }
      .title {
        font-size: 14px;
      }
      .info {
        background-color: #eee;
        overflow: hidden;
        p {
          margin: 3px;
        }
        .price {
          .new {
            color: red;
            font-size: 16px;
            font-weight: bold;
            margin-right: 10px;
          }
          .old {
            text-decoration: line-through;
            font-size: 12px;
          }
        }
        .sell {
          display: flex;
          justify-content: space-between;
          font-size: 13px;
        }
      }
    }
  }
</style>